LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Where to get SBC heads converted?

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Old 03-21-2007, 02:18 PM
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Originally Posted by TwoFast4Lv
Heck it took three years just to get the car running again
i'm going on 3.5 w/ no end in sight...
Old 03-21-2007, 04:16 PM
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Originally Posted by TwoFast4Lv
Outlaw...

Brett is running AFRs(converted From there standard line BY AFR). I want to Say Tony may also by running aftermarket heads, but I am unsure.

Ed Write is one of the few I know of pushing over 500RWHP on stock castings N/A.

I am hitting over 600RW on extemely modified stock LT1 casting but I use Juice.

IF they made 18* heads for LTx cars that would be great. The only thing close was the AFR 215RR...a SBC converted head from AFR
My heads are AFR 227 LT4 heads. They are not converted SBC's.

Oh...and guys it is going on 2.5 years for me! Car is 99.9% ready.

Last edited by Tony Shepherd; 03-21-2007 at 04:25 PM.
Old 03-21-2007, 05:04 PM
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Originally Posted by Tony Shepherd
My heads are AFR 227 LT4 heads. They are not converted SBC's.

Oh...and guys it is going on 2.5 years for me! Car is 99.9% ready.

Tony...And others. Until this time last year ALL AFR LTx heads were just Converted SBC heads from there regular line I got this straight from AFR while we were waiting for a set last nov-march


So YES you are running conveted SBC heads
Old 03-21-2007, 05:20 PM
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Originally Posted by TwoFast4Lv
Tony...And others. Until this time last year ALL AFR LTx heads were just Converted SBC heads from there regular line I got this straight from AFR while we were waiting for a set last nov-march


So YES you are running conveted SBC heads

Well. I did not know this. I though they were actually cast.
Old 03-21-2007, 05:23 PM
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Originally Posted by Tony Shepherd
Well. I did not know this. I though they were actually cast.

As did I.

Tony.
Old 03-21-2007, 07:28 PM
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guess.. they just drilled them for ltx intake's then.. Good info they're...
Old 03-21-2007, 08:48 PM
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Yup I was very suprised when they told us. All the new port designs are on dedicated castings as of some time 2006

We waited from Nov2005-March2006 because the place that did the conversion was on Christmas vaction
Old 03-21-2007, 09:16 PM
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When I ordered my heads from AFR, they bolted directly up. As far as the consumer is concerned, they are not converted because they come straight from AFR ready to bolt on. How they arrived at that product is all in the most efficient manufacturing methods, which is no concern of ours. They simply didn't drill the holes that are needed for SBC, and drilled the holes needed for LT1. Why would you have a whole different casting?
Old 03-21-2007, 09:32 PM
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Brett is running AFRs(converted From there standard line BY AFR). I want to Say Tony may also by running aftermarket heads, but I am unsure.

IF they made 18* heads for LTx cars that would be great. The only thing close was the AFR 215RR...a SBC converted head from AFR
Yeah Tony and I are running the same heads (AFR 227's)... but something sounds weird about how the LT1/4 AFR heads would be simply converted heads from their SBC line....... the reverse cooling would be easy enough to do, but the bolt holes are in completely different locations and at different angles. On my 227's there isn't any bolt holes that were welded up and redrilled/tapped.... AFR is a big enough company to simply do up an LTx based casting in whatever CC they want... Maybe Tony Mamo has ssome info on it. he's on here so i'll pm him and ask him..... i mean hell all heads are based off of SOMETHING.... so even stock LT1 heads one could say that Chevy just converted them to reverse cooling but were originally based off of standard aluminum SBC heads no????? so EVERYONE is technically running converted SBC heads....

and for the longest time not running competition the last time my car was started and idled with the 355 was february/march of 04...... frikin crazy.... i don't even know if i can drive this thing anymore... certainly not on spray at first that's for sure....
Old 03-21-2007, 09:55 PM
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Wow...I need to re-read this later when I'm not on the phone with a girl...lol...they're so distracting..go figure...anywho I was considering the RR 215s or 227s...for the like 5th phase of pimping PEPE...
Old 03-21-2007, 10:12 PM
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Good Luck finding a set of 215 rr's....They dont make them anymore for an LT1 but said if I bought 10 sets they would.
Old 03-21-2007, 10:21 PM
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Originally Posted by -PEPE-
Wow...I need to re-read this later when I'm not on the phone with a girl...lol...they're so distracting..
Child molester
Old 03-21-2007, 10:25 PM
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Originally Posted by JUICED96Z
Child molester
dude she's 35 & I'm 43...lmao...she's SMOKING HOT...

ok back to heads....I am also looking at Larry Meaux's and PortPros heads..I have to stick with 23deg though for now...due to the block I guess and how it's all setup...I guess.
Old 03-21-2007, 10:29 PM
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LOL!!!!!!!!!!!


I can't wait till I build a motor after this one with aftermarket heads. There is a local guy that is said to be one of the best porters in the country.
He also does all the heads for two MAJOR pro stock bikes and a few cars last I checked.

The dude works like 100 hours a week but loves his work.
Old 03-21-2007, 10:33 PM
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Originally Posted by JUICED96Z
LOL!!!!!!!!!!!


I can't wait till I build a motor after this one with aftermarket heads. There is a local guy that is said to be one of the best porters in the country.
He also does all the heads for two MAJOR pro stock bikes and a few cars last I checked.

The dude works like 100 hours a week but loves his work.
well with this new cam I would like to see the net on the track, screw the dyno...not a dyno number person, but I know enough now to know what numbers should give me what 1/4 times based on the cars setup.
Old 03-21-2007, 10:40 PM
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To me dyno numbers are nothing, its the track times that prove the car really. Yeah dyno numbers matter some but I have seen some lower power cars run faster then hihger power cars.


I wonder what 900crank HP translates into in the 1/4 with a near stock weight car after the cage and all or a little lighter.

TH-400 and a 9 inch along with obvious suspension and all.

HMMMM
Old 03-21-2007, 11:22 PM
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Originally Posted by JUICED96Z
To me dyno numbers are nothing, its the track times that prove the car really. Yeah dyno numbers matter some but I have seen some lower power cars run faster then hihger power cars.


I wonder what 900crank HP translates into in the 1/4 with a near stock weight car after the cage and all or a little lighter.

TH-400 and a 9 inch along with obvious suspension and all.

HMMMM
hmmm minus about 12% for manual...about 802rwhp, with a full drag setup, stockish weight...maybe 9's engine only n/a, maybe 8's??? Shrugs who knows man?
Old 03-22-2007, 12:21 AM
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Ok first things first. The AFR heads were modified in there raw form before machining...you know the part where they cut the surfaces AND Drill all the Holes Ever notice how the LT4 heads have the holes for LT1 gaskets also

ANYWAY. SO you guys are telling me I am one of the few pushing into the nines with Ported GM LT1 castings? The set that came on my car from the factory even!

I was talking to Ray and Nitro daves today. Once my heads are converted they will be true LT1 heads just like AFRs

Like I said I would have never guessed had I not been told by four different people at AFR including Tony Then again maybe after waiting for Over Three months for a set of 210 LT4 heads they all just decided to tell us any thing
Old 03-22-2007, 06:16 AM
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Originally Posted by JUICED96Z
I wonder what 900crank HP translates into in the 1/4 with a near stock weight car after the cage and all or a little lighter.

TH-400 and a 9 inch along with obvious suspension and all.
I'm at or above 900 fwhp and running 9.9 at 146 at full weight + cage + turbo + intercoler + SFC's + etc. Mine is with a lazy 1.6x 60' time. With an approprate 60', 146 mph should push it into the 9.3 - 9.4 range.

Mike
Old 03-22-2007, 09:46 AM
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Mike you are going to have to get it to 60ft a lot harder then that to get those numbers. ever thought of like a small 50 shot coming out of the hole?


BTW know what a 400hp Camaro and a 800hp Supra have in common?


They both run low 12s high 11s


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